CN101547315B - Pick-up device - Google Patents

Pick-up device Download PDF

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Publication number
CN101547315B
CN101547315B CN2009101268882A CN200910126888A CN101547315B CN 101547315 B CN101547315 B CN 101547315B CN 2009101268882 A CN2009101268882 A CN 2009101268882A CN 200910126888 A CN200910126888 A CN 200910126888A CN 101547315 B CN101547315 B CN 101547315B
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China
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described
pixel addition
number
image
according
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CN2009101268882A
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Chinese (zh)
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CN101547315A (en
Inventor
上村达之
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奥林巴斯映像株式会社
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Priority to JP2008076644A priority Critical patent/JP2009232275A/en
Priority to JP2008-076644 priority
Priority to JP2008076644 priority
Application filed by 奥林巴斯映像株式会社 filed Critical 奥林巴斯映像株式会社
Publication of CN101547315A publication Critical patent/CN101547315A/en
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Publication of CN101547315B publication Critical patent/CN101547315B/en

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Abstract

The present invention provides a pick-up device capable of restraining image blurring caused by hand shake in pick-up processing in moving process. In panorama mode, a CPU 21 calculates lightness of an object representing lightness of the object, sets allowed moving speed determined by setting state of the device. Then, the CPU 21 sets pixel addition according to combination of object lightness and the allowed moving speed, and sets shutter speed (ss), aperture value and ISO photosensibility as exposure condition in pick-up processing. Then in the pick-up processing, the CPU 21 executes pixel addition drive for a pick-up section according to set of the pixel addition, and controls exposure of the pick-up section according to set of the exposure condition.

Description

Camera head

Technical field

The present invention relates to following camera head: this camera head has image pickup part, this image pickup part has a plurality of pixels that receive shot object image and carry out opto-electronic conversion, carries out photograph processing continuously and generates a plurality of photographic image datas while described camera head changes relative position with subject.

Background technology

In the past, the camera head of known digital camera etc. had following panorama photographic mode, and it is synthetic and generate panoramic picture to have successional a plurality of photographs in this pattern.Under this panorama photographic mode, when being moved, camera head takes subject according to each part, can obtain the panoramic picture that the photographs with this each part couples together thus.At this, in order to obtain panoramic picture, need carry out the mode that the part with the photographs that is connected repeats respectively and photograph, the technology as realizing this point for example has patent documentation 1 disclosed technology.Promptly, in digital camera, to be presented in real time on the display part as electronic viewfinder as the live view image from the output of imaging apparatus, but in patent documentation 1, the position display movable mark of the next photographs on this live view image, and, for example show fixation mark in central authorities.And, when making movable mark move in the fixation mark, carry out next photograph processing when user's mobile device main body.Thus, the mode that can repeat with the part of adjacent photographs is carried out continuous photograph processing automatically.

[patent documentation 1] TOHKEMY 2000-101895 communique

But, as mentioned above, on one side under the situation that one side mobile device main body is photographed, have the problem that hand is trembled that is easy to generate.Therefore, In view of the foregoing, the objective of the invention is to, provide in the moving process that can be suppressed at apparatus main body the hand that produces when carrying out photograph processing to tremble the image blurring camera head that is caused.

Summary of the invention

In order to address the above problem and to achieve the goal, the described image pickup part of camera head of the present invention has shot object image is subjected to light and carries out a plurality of pixels of opto-electronic conversion, described camera head carries out photograph processing continuously and generates a plurality of photographic image datas while changing relative position with subject, it is characterized in that, this camera head has: photometric measurer, and photometry is carried out in its lightness to described shot object image; The pixel addition configuration part, its basis is carried out the setting of pixel addition number by the lightness of the described shot object image of described photometric measurer photometry and the relative permission translational speed of described subject; Exposure condition setting portion, its according to the permission translational speed of the apparatus main body of setting explicitly by the set condition of the lightness of the described shot object image of described photometric measurer photometry and device, the conditions of exposure when setting any one value at least in shutter speed, f-number and the camera photosensitive degree as described photograph processing; Display part, it shows that continuously the described shot object image of being taken by described image pickup part is as the live view image; Mobile test section, it detects the moving at least one direction of described live view image; Instruction unit, its according to move relevant amount by described mobile test section is detected, indicate respectively beginning regularly of a plurality of described photograph processing; Control part, when its any in a plurality of described photograph processing that the indication by described instruction unit begins is photographed, the setting of the pixel addition number that carries out according to described pixel addition configuration part, described image pickup part is carried out pixel addition to be driven, and, according to the conditions of exposure of setting by described exposure condition setting portion, carry out the exposure control of described image pickup part; And storage part, described a plurality of photographic image datas that its storage generates by described photograph processing.

And, camera head of the present invention is characterised in that, in foregoing invention, described camera head also has the photosensitivity adjusting portion, this photosensitivity adjusting portion is under the situation of lightness less than predefined defined threshold by the described shot object image of described photometric measurer photometry, switch the setting of pixel addition number by described pixel addition configuration part, the value of the camera photosensitive degree when making described photograph processing is to ISO side shifting setting, and, lightness according to described shot object image, set shutter speed, the conditions of exposure of any one value at least in f-number and the camera photosensitive degree during as described photograph processing, change the value of described camera photosensitive degree gradually, carry out the adjusting of described camera photosensitive degree thus.

And camera head of the present invention is characterised in that in foregoing invention, described pixel addition configuration part is according to the photometry result of described photometric measurer, and stage ground switches sets described pixel addition number.

And, camera head of the present invention is characterised in that, in foregoing invention, described camera head has the number configuration part, the generation number of described photographic image data is set in this number configuration part, described pixel addition configuration part is considered to set described pixel addition number by the generation number of described number configuration part setting.

And, camera head of the present invention is characterised in that, in foregoing invention, described pixel addition configuration part is according to the generation number of being set by described number configuration part, and the pixel addition number under the situation that this generation number is few is set for less than the pixel addition number under this generation number situation how.

And, and camera head of the present invention is characterised in that in foregoing invention, described camera head has: image synthesizes portion, its described a plurality of photographic image datas with described generation are synthetic, and generate composograph; And picture size configuration part, it is according to the picture size of predetermined described composograph, set described a plurality of photographic image data picture size separately, described pixel addition number is set according to the picture size of the described photographic image data of being set by described picture size configuration part in described pixel addition configuration part.

And, camera head of the present invention is characterised in that in foregoing invention, described camera head has: the speed detection unit, its according to move relevant amount by described mobile test section is detected, judge whether the relative moving speed of described subject surpasses described permission translational speed; And informing portion, it reports warning being judged to be by described speed detection unit above under the situation of described permission translational speed.

According to the present invention, indicate the beginning timing of photograph processing according to moving of subject, generate under the situation of a plurality of photographss carrying out photograph processing continuously, according to the lightness of shot object image and the relative permission translational speed of subject, carry out the setting of pixel addition, the conditions of exposure when setting any one value at least in shutter speed, f-number and the camera photosensitive degree as photograph processing.And, when photograph processing, can carry out pixel addition to image pickup part according to the setting of pixel addition and drive, and, carry out the exposure control of image pickup part according to the conditions of exposure that sets, so, the camera photosensitive degree can be improved.Thus, bring into play following effect:, also hand can be suppressed in wide brightness range and tremble cause image blurring even in the moving process of apparatus main body, carry out under the situation of photograph processing.And, drive by image pickup part being carried out pixel addition, not only can suppress image blurring, the data volume that can also cut down the parts of images that is generated.

Description of drawings

Fig. 1 is the back view of digital camera.

Fig. 2 is the block diagram of the system configuration of expression digital camera.

Fig. 3 is the key diagram of detection principle of the motion-vector of expression motion-vector testing circuit.

Fig. 4 is the key diagram of the overview of explanation panorama photographic mode.

Fig. 5 is the figure of the Principles of Regulation of explanation ISO photosensitivity.

Fig. 6 is the figure that the correspondence that is set in each interior photography conditions that comprises pixel addition and conditions of exposure is carried out formization and illustrated.

Fig. 7 is the flow chart that the elemental motion of digital camera is shown.

Fig. 8 is the flow chart that the photograph mode action of digital camera is shown.

Fig. 9 illustrates the flow chart that photography conditions is set the detailed process step of handling.

Figure 10 is the figure that the example of pan (pan) direction guiding OSD is shown.

Figure 11 is the figure that another example of panning direction guiding OSD is shown.

Figure 12 is the figure that another example of panning direction guiding OSD is shown.

Figure 13 is the figure that another example of panning direction guiding OSD is shown.

Figure 14-the 1st illustrates the figure of an example of the display frame after the photograph processing of the 1st parts of images.

Figure 14-the 2nd, the figure of an example of the display frame when pointer being shown being positioned at the frame of target.

Figure 15 is the figure of Principles of Regulation of the ISO photosensitivity of explanation variation.

Figure 16 is the figure that the correspondence that is set in each interior photography conditions that comprises pixel addition and conditions of exposure of variation is carried out formization and illustrated.

Label declaration

1: digital camera; 10: image pickup part; 11: imaging apparatus; 12: the lens system unit; 13: the lens driving circuit; 14: imaging circuit; 15:SDRAM; 16:AE portion; 17:AF portion; 18: image processing circuit; 19: the motion-vector testing circuit; 20: the angular velocity detection circuit; 21:CPU; 22: internal memory; 23: display driver circuit; 24: display part; 25: communication I/F; 26: operating portion; 3: shutter release button (shutter release button); 5: menu button; 6: the cross button; The 7:OK button; 27: but removable memories; 28: power circuit; 29: battery; 30: bus; 2: camera body.

Embodiment

Below, the preferred implementation that present invention will be described in detail with reference to the accompanying.In the present embodiment, be that example describes with the situation that camera head of the present invention is applied to digital camera.

(execution mode)

Fig. 1 is the back view of digital camera 1.As shown in Figure 1, digital camera 1 have the upper surface of being located at camera body 2 be used to indicate regularly shutter release button (shutter release button) 3 of photography, be located at the back side of camera body 2 power knob 4 and menu button 5, have the button of all directions up and down (upwards button, to knob down, to left button with to right button) cross button 6, determine content of operation etc. OK button 7, show the display part 24 of various pictures etc.And, though diagram not is provided with view finder and pick-up lens etc. at the front surface of camera body 2.

Fig. 2 is the block diagram that the system configuration of this digital camera 1 is shown.As shown in Figure 2, digital camera 1 has: imaging apparatus 11, lens system unit 12, lens driving circuit 13, imaging circuit 14, SDRAM 15, AE portion 16, AF portion 17, image processing circuit 18 as image processing part, motion-vector testing circuit 19 as mobile test section, angular velocity detection circuit 20, CPU 21, internal memory 22, display driver circuit 23, display part 24, communication I/F 25, operating portion 26, but removable memories 27, power circuit 28, and battery 29, imaging circuit 14, lens driving circuit 13, SDRAM (Synchronous Dynamic RandomAccess Memory, Synchronous Dynamic Random Access Memory) 15 as storage part, AE portion 16, AF portion 17, image processing circuit 18, motion-vector testing circuit 19, angular velocity detection circuit 20, CPU21, but display driver circuit 23 constitutes via bus 30 with removable memories 27 and is connected.And imaging apparatus 11 and lens system unit 12, lens driving circuit 13, imaging circuit 14 constitute the image pickup part 10 that shot object image is made a video recording.

Imaging apparatus 11 for example is CCD (Charge Coupled Device, charge coupled device) or CMOS (Complementary Metal Oxide Semiconductor, complementary metal oxide semiconductors (CMOS)) imageing sensor such as, shot object image by 12 incidents of lens system unit is carried out opto-electronic conversion, and output analog electrical signal (image pickup signal).This imaging apparatus 11 has whole pixel output modes and the signal of adjacent same color pixel in the horizontal direction or on the vertical direction is carried out added pixels addition output mode.And, in the pixel addition output mode, can export the pixel of pixel addition number is carried out the image pickup signal that addition obtains.

Lens system unit 12 comprises pick-up lens, aperture and the shutter etc. that are made of with lens etc. with lens and zoom AF (Auto-Focus, automatically focusing).And lens driving circuit 13 drives this lens system unit 12 according to the control of CPU 21.

14 pairs of analog electrical signals from imaging apparatus 11 outputs of imaging circuit carry out CDS (Correlated Double Sampling, correlated-double-sampling) or AGC analog such as (Automatic GainControl, automatic gain are as can be known).Then, be converted to digital electric signal, and this digital electric signal is carried out Digital Signal Processing such as pixel interpolation processing and color correction process, and export as view data.This view data is temporarily stored among the SDRAM 15.And imaging circuit 14 is according to the control of CPU 21, and the whole pixel output modes and the pixel addition output mode that switch imaging apparatus 11 are set drive pattern.And, when photograph processing, be under the situation of pixel addition output mode at drive pattern, control the pixel addition number and imaging apparatus 11 is carried out the pixel addition driving.

SDRAM 15 is used for interim storage from the view data of the processing of the view data of imaging circuit 14 outputs and image processing circuit 18 etc.For example, be stored in the photography timing from the view data of the still images such as photographs of imaging circuit 14 outputs and the view data (hereinafter referred to as " live view view data ") of live view image etc. temporarily.In one of pattern of digital camera 1 is photograph mode etc., showing the shot object image that images on the imaging apparatus 11 on the display part 24 in real time in the mode of dynamic image.The live view image just is meant this image.

AE portion 16 is according to carrying out automatic exposure from the view data of imaging circuit 14 outputs.AF portion 17 regulates according to carrying out auto-focus from the view data of imaging circuit 14 outputs.Image processing circuit 18 when recording image data or demonstration write down view data the time etc., carry out compression processing and decompression based on the view data of for example JPEG (Joint Photographic Experts Group, JPEG (joint photographic experts group)) mode etc.And, synthesize view data with successional a plurality of photographss and generate the adjusted size processing etc. of 1 Zhang Quanjing treatment of picture as composograph, view data that the increase and decrease pixel count amplifies/dwindle still image, at the various image processing of view data.

Motion-vector testing circuit 19 detects the motion-vector of every frame according to the live view image from imaging circuit 14 outputs, and exports as moving of live view image.Fig. 3 is the key diagram of detection principle that the motion-vector of motion-vector testing circuit 19 is shown.At any time be taken into the live view view data according to per 1 frame (for example per 1/30 second), it is stored among the SDRAM 15 temporarily, and be presented on the display part 24, still, motion-vector testing circuit 19 detects motion-vector by the difference of obtaining between the approaching live view view data.Particularly, motion-vector testing circuit 19 will be taken into before and live view view data that keeps in order to detect motion-vector and the live view view data that newly is taken into compare, and obtain difference.For example in the example of Fig. 3, obtain the difference of live view view data i (1) and live view view data i (4).Thus, can detect the motion-vector of variable quantity that the position of the same subject in each live view image is taken in expression.In addition, also can detect motion-vector by the difference of obtaining between adjacent live view image.And, suitably use technique known to carry out the detection of this motion-vector.

Angular speed when angular velocity detection circuit 20 detects camera body 2 rotations.This angular velocity detection circuit 20 is being proofreaied and correct because hand use such as when trembling cause image blurring.For example, by gyroscope independently etc., detect with the optical axis direction of the optical system of digital camera 1 as Z-direction, will be vertical with Z-direction plane (the shooting face of imaging apparatus 11) during as the XY plane around each angular speed of X-axis, Y-axis and Z axle.

CPU 21 is according to from the operation signal of operating portion 26 etc., reads the camera program and carries out from internal memory 22.And, carry out at the indication of each one that constitutes digital camera 1 and the transmission of data etc. the action of unified control figure camera 1.Internal memory 22 for example is the nonvolatile memory that flash memory etc. can electricity be rewritten.In this internal memory 22, record the various camera programs that are used for making digital camera 1 action and realize the various functions that this digital camera 1 has in advance and the data used in the process of this camera program of execution etc.

Display driver circuit 23 drives display part 24 according to the control of CPU 21.Display part 24 is except showing photographs and live view image, also show the various set informations of digital camera 1 etc., by LCD (Liquid Crystal Display, LCD) or EL display display unit such as (Electroluminescence Display, electroluminescent displaies) realize.On this display part 24, in photograph mode, for example describe the live view image once more and show continuously in the mode of dynamic image according to per 1 frame, in reproduction mode, show photographs.

Operating portion 26 be used to accept photograph indication regularly, comprise the various operations that panorama photographic mode is undertaken by the user at the mode initialization operation of interior various photograph modes and reproduction mode etc., the setting operation of photography conditions etc., and operation signal is notified to CPU 21, by being assigned with the realizations such as push-button switch of various functions.This operating portion 26 comprises shutter release button 3, power knob 4, menu button 5, cross button 6 and the OK button 7 of Fig. 1.

Communication I/F25 is used for the interface that specification is connected external equipments such as digital camera 1 and for example personal computer of wait communicating by letter according to for example USB (Universal Serial Bus, USB).

But removable memories 27 for example is the storage card that xD-picutre (xD-image card) (registered trade mark) or compact flash (registered trade mark) card etc. can freely load and unload on digital camera 1.But in this removable memories 27, write the view data of photographs and the view data of panoramic picture etc., but perhaps by the view data of read-write equipment playback record in removable memories 27 by the not shown read-write equipment corresponding with its kind.

The power conversions that power circuit 28 will be provided by the battery of being loaded 29 is the electric power of regulation, and offers each one of digital camera 1.

Here, the summary of the panorama photographic mode of one of photograph mode of the digital camera 1 that explanation constitutes as mentioned above with reference to Fig. 4.In this panorama photographic mode,, generate a plurality of photographss (the following photographs that will take in order to obtain panoramic picture is called " parts of images ") while the relative position that changes with subject carries out photograph processing continuously.For example, the user presses shutter release button 3, then, towards the panning direction of regulation camera body 2 is carried out pan and operates and carry out panoramic shooting, takes subject according to each part.The pan operation is the operation of instigating camera body 2 to move along the panning direction rotation on one side on one side.In Fig. 4, after the user is shown presses shutter release button 3, in the horizontal direction camera body 2 is carried out the pan operation from the left side towards the right side, for example taken the situation of 3 parts of images I11, I13, I15.Here, about the photograph processing of each several part image I 11, I13, I15, in the photograph processing of regularly carrying out of pressing of shutter release button 3 at the 1st parts of images I11.At the 2nd and later parts of images I13, I15, camera body 2 is carried out in the process of pan operation the user, carry out automatically in the mode that the camera coverage of adjacent panning direction partly repeats.And, parts of images I11, I13, the I15 of each part of generating like this coupled together synthesize, so that adjacent respectively parts of images I11, I13, the relation of the position between I15 are coincide, generate 1 Zhang Quanjing image I 21.Below, illustrate that the generation number of establishing parts of images is 3, and the situation of synthesizing panoramic picture according to 3 parts of images.

But, in panorama photographic mode, as mentioned above, Yi Bian user one side mobile cameras main body 2 is carried out the 2nd and later photography.Therefore, being easy to generate hand especially in the 2nd and later parts of images trembles.Therefore, in the panorama photographic mode of present embodiment, drive by imaging apparatus 11 being carried out pixel addition, thereby improve the camera photosensitive degree, the hand that is suppressed at when carrying out photograph processing in the pan operation is trembled caused image blurring.And the conditions of exposure of each value of setting shutter speed ss, f-number and ISO photosensitivity (camera photosensitive degree) during as photograph processing by the setting of the setting of this conditions of exposure and pixel addition is combined, carries out the adjusting of ISO photosensitivity.Like this, realized because hand is trembled the deterioration and because the balance between the deterioration of the S/N that noise component(s) caused that raising ISO photosensitivity is amplified of the image blurring caused image quality that causes.

Fig. 5 is the figure of Principles of Regulation of the ISO photosensitivity of explanation present embodiment.That is, establish the subject brightness of transverse axis for the lightness of expression shot object image, the longitudinal axis is the ISO photosensitivity, and the inclined shaft shown in the double dot dash line is shutter speed ss, and the program line chart (P line chart) of the exposure control of digital camera 1 is shown.

CPU 21 carries out the adjusting of ISO photosensitivity as the photosensitivity adjusting portion according to this P line chart.That is, as shown in Figure 5,, all driving imaging apparatus 11 under the pixel output mode, and establishing aperture is that 2 apertures are set f-number in the high brightness side of subject brightness more than or equal to B1.And, 1/125 second to be the limit shutter speed ss that slows down gradually, thus, with the ISO photosensitivity maintain under whole pixel output modes minimum photosensitivity (100) (A).The translational speed of camera body 2 when here, 1/125 second shutter speed ss is a photograph processing according to hypothesis in advance and definite value.This value is the value of setting as best shutter speed, under the situation of photographing section image in the process in pan operation, can generate the image blurring parts of images that does not have hand to tremble to be caused.

On the other hand, under the situation of subject brightness less than B1, the drive pattern of imaging apparatus 11 is switched to the pixel addition output mode, the value that makes the ISO photosensitivity is to ISO side shifting setting.In the present embodiment, under the situation of subject brightness less than B1, establish the pixel addition number for " 4 ", imaging apparatus 11 is carried out 4 pixel addition drive, it is 400 that the ISO photosensitivity is brought up to 4 times of minimum photosensitivity whole pixel output modes under.And, in subject brightness is the scope of B2~B1,, the ISO photosensitivity is maintained 400 (B) 1/125 second to be the limit shutter speed ss that slows down gradually.And, under the situation of subject brightness, make aperture open less than B2, set f-number.In subject brightness is the scope of B3~B2,, the ISO photosensitivity is maintained 400 (C) 1/125 second to be the limit shutter speed ss that slows down gradually.In subject brightness is the scope of B4~B3, with shutter speed ss stuck-at-/125 seconds, be that the upper limit utilizes amplifier etc. to amplify the value of ISO photosensitivity with 800, improve (D) gradually by gain-adjusted.In subject brightness is the scope of B5~B4,, the ISO photosensitivity is maintained 800 (E) 1/30 second to be the limit shutter speed ss that slows down gradually.In subject brightness is the scope of B6~B5,, be the upper limit improves the ISO photosensitivity by gain-adjusted value (F) with 1600 with shutter speed ss stuck-at-/30 seconds.Under the situation of subject brightness,, the ISO photosensitivity is maintained 1600 (G) 1/15 second to be the limit shutter speed ss that slows down gradually less than B6.

Like this, by the setting of packed-pixel addition and the setting of conditions of exposure, the ISO photosensitivity can be brought up to whole pixel output modes 4 times, can consider that the deterioration of S/N is regulated the ISO photosensitivity.Therefore, can in wide brightness range, be difficult to be subjected to the image blurring few photography that influences of trembling in one's hands.And, under the pixel addition output mode, drive in the brightness range of imaging apparatus 11, not only can improve the ISO photosensitivity and suppress image blurring, utilize the effect of pixel addition, can also cut down the data volume of image pickup signal.Thus, exist at memory under the situation of restriction, can increase the number of the view data that once can launch, can be increased in the number of the parts of images that can synthesize under the panorama photographic mode.Thus, can generate the panoramic picture of having taken wide region.In addition, owing to carry out pixel addition, resolution deteriorates.But, synthesize in the panorama photographic mode of panoramic picture at a plurality of parts of images of connection, compare with common photograph mode, also no problem even the resolution of each several part image reduces a little.And, in panoramic picture synthetic, with the contraposition of each several part image and when connecting, carry out the each several part image transitions is the barrel surface conversion process of barrel surface, but, when the picture size of parts of images hour, also has the effect that can shorten this needed time of barrel surface conversion process.

More specifically, in the present embodiment,, set focal distance f and picture size etc. as photography conditions with the setting of pixel addition and the setting of conditions of exposure.Fig. 6 is the figure that the correspondence that is set in each interior photography conditions that comprises above-mentioned pixel addition and conditions of exposure is carried out formization and illustrated.For example as shown in Figure 6, corresponding with the combination of subject brightness and permission translational speed in advance, set the setting, shutter speed ss, f-number, ISO photosensitivity, focal distance f and the picture size that detect translational speed, pixel addition, as photography conditions.In addition, in Fig. 6, to the label of each record mark " A "~" G ", illustrate and P line chart shown in Figure 5 between corresponding relation.

Here, camera body 2 that allows when allowing translational speed to be photograph processing and the relative moving speed between the subject are set this permission translational speed explicitly with the set condition of digital camera 1.For example consider the angle of visual field of picture size and camera lens, in hand is trembled unconspicuous scope, preestablish this permission translational speed.In addition, this permission translational speed both can change according to this picture size of setting constantly, also can be made as the fixed value of maximum image size of having supposed in this device etc.And, be under the situation of zoom lens at camera lens, this allows translational speed also can to change linkedly with the focal length (zoom position) of this moment.Perhaps, this permission translational speed also can be made as and suppose the generally fixed value of the angle of visual field of the focal length of widely used wide-angle side in panoramic shooting.

Detect translational speed and be equivalent to basis translational speed that moves the camera body 2 that calculates by motion-vector testing circuit 19 detected live view images in panorama photographic mode.As focal distance f, for example be set at " 35mm " as fixed value.And,, for example be set at " 2M " as fixed value as picture size.By such setting picture size, whether pixel addition is irrelevant with carrying out, and can make the picture size of parts of images identical.In addition, the value of picture size is the value when having supposed " 6M " as the picture size of panoramic picture, can suitably set according to the generation number of parts of images and the picture size of panoramic picture.For example, if the generation number of parts of images is 5, then the picture size according to panoramic picture is " 6M ", and the picture size of each several part image is set at " 1.2M ".And, according to the picture size that sets " 1.2M ", parts of images is carried out adjusted size handle.Like this, can generate the panoramic picture of homogeneous image quality.

The action of digital camera 1 then, is described.Fig. 7 is the flow chart that the elemental motion of digital camera 1 is shown.As shown in Figure 7, digital camera 1 is energized (power source ON) back (step a1: be) pressing power knob 4, transfers to power connection state (step a3).

Then, under the situation of having carried out menu operation (pressing menu button 5) (step a5: be), transfer to menu action (step a7).In this menu action, CPU 21 start menus are handled, display menu picture on display part 24, the setting menu of prompt modes and the menu items such as setting menu of various photography conditions.Then, CPU 21 carries out and the corresponding processing of selecting by user's operation of menu item, carries out the processing that is used to carry out the setting of pattern and the setting/change of photography conditions etc. according to the operation signal from operating portion 26.Handle by the menu here, for example can set photograph mode and reproduction mode isotype, can set photograph modes such as common photograph mode or panorama photographic mode as photograph mode.

If do not carry out menu operation (step a5: not), then transfer to the action corresponding with the pattern of current setting.That is, in current pattern (step a9: be) under the situation of photograph mode, transfer to photograph mode action (step a11).Here, after transferring to photograph mode action, become the live view image display status that makes display part 24 continue to carry out the demonstration of live view image.Promptly, the shot object image that carries out repeatedly imaging in imaging apparatus 11 is stored among the SDRAM 15 as the live view view data temporarily, and on display part 24, show a series of processing of this live view view data, show the live view image continuously in the mode of dynamic image.On the other hand, not (step a13: be) under the situation of photograph mode (step a9: not) but pattern beyond the photograph modes such as reproduction mode in current pattern, transfer to the action corresponding (step a15) with this pattern.For example, if current pattern is a reproduction mode, but then CPU 21 carries out and is used for playback record and is presented at processing on the display part 24 in the view data of removable memories 27 and with its reproduction.

Then, during deenergization (power supply OFF) (step a17: be), digital camera 1 is transferred to power-off state (step a19) when pressing power knob 4, finishes elemental motion.If power supply does not disconnect (step a17: not), then return step a5.

The photograph mode action of the digital camera 1 when then, photograph mode being described.Fig. 8 is the flow chart that the photograph mode action of digital camera 1 is shown.After transferring to the photograph mode action, CPU 21 beginning photograph modes are handled, and at first, judge the kind of photograph mode.(step b1: not), transfer to the photography action (step b3) corresponding, then, return the step a11 of Fig. 7, and transfer to step a13 under the situation that is set at common panorama photographic modes such as photograph mode photograph mode in addition with this photograph mode.

Be set at (step b1: be) under the situation of panorama photographic mode, CPU 21 beginning panoramic shootings are handled, and at first, carry out photography conditions and set processing, the photography conditions (step b5) when setting photograph processing.

Fig. 9 illustrates the flow chart that photography conditions is set the detailed process step of handling.Set in the processing at photography conditions, as shown in Figure 9, at first, CPU 21 is used for the lightness of shot object image is carried out the processing of photometry as photometric measurer according to the live view image that is taken into.Then, calculate the subject brightness (step c1) of the lightness of expression shot object image.For example, CPU 21 calculates subject brightness according to the pixel value (monochrome information) of live view image.In addition, also can constitute the known photometry sensor of use and carry out photometry.

Then, CPU 21 sets the permission translational speed of for example determining according to the set condition of digital cameras such as focal distance f and picture size 1 (step c3).Then, CPU 21 as the pixel addition configuration part, carries out the setting (step c5) of pixel addition according to the combination of subject brightness and permission translational speed according to the corresponding relation of Fig. 6.Particularly, CPU 21 sets whether carry out pixel addition, divides into the plain addition number of fixation in the situation of carrying out pixel addition.And, CPU 21 sets shutter speed ss (step c7) as exposure condition setting portion according to the combination of subject brightness and permission translational speed, sets f-number (step c9), set ISO photosensitivity (step c11), the conditions of exposure when setting each value as photograph processing.

According to after subject brightness and allowing translational speed to set photography conditions, return the step b5 of Fig. 8 like this.Then, CPU 21 accepts the 1st photography indication regularly, becomes holding state up to pressing shutter release button 3.The user indicates the photography timing of the 1st parts of images while watching the live view image that is presented on the display part 24 to press shutter release button 3.

Then, CPU 21 will press the beginning timing of the timing of shutter release button 3 as photograph processing, the beginning of control photograph processing, and the shot object image of taking camera coverage at this moment is as the 1st parts of images (step b7).Like this, when taking the 1st parts of images, by pressing shutter release button 3, CPU 21 accepts the beginning indication regularly of photograph processing, and, the beginning of control photograph processing under the situation of supressing shutter release button 3, and as instruction unit performance function.Then, when this photograph processing, CPU 21 is as control part, setting according to the pixel addition of in the step c5 of Fig. 9, setting, image pickup part 10 is carried out pixel addition to be driven, and, be shutter speed ss, f-number and ISO photosensitivity according to the conditions of exposure of in step c7~c11 of Fig. 9, setting, carry out the exposure control of image pickup part 10.Particularly, CPU 21 outputs to imaging circuit 14 with the setting data of pixel addition, the switching of the drive pattern of control imaging apparatus 11.Then, under the situation of carrying out pixel addition, control pixel addition number carries out pixel addition to imaging apparatus 11 and drives.And then CPU21 outputs to lens driving circuit 13 with each set point of shutter speed ss and f-number.Then, carry out following processing: be used to control that the shutter corresponding with shutter speed ss drives or drive with the corresponding aperture of f-number and carry out the processing that light quantity regulates and be used for set point with the ISO photosensitivity outputing to imaging circuit 14 and carrying out processing with the corresponding gain-adjusted of ISO photosensitivity the exposure during the control photograph processing.These parts of images data are stored among the SDRAM 15 temporarily.

Then, CPU 21 carries out showing the control of panning direction guiding OSD on display part 24, for example accepts the indication (step b9) of any panning direction up and down.Then, CPU 21 travel direction determination processing are judged the direction of rotation of camera body 2 and are detected panning direction (step b11).Particularly, CPU 21 judges the direction of rotation of camera body 2 according to angular velocity detection circuit 20 detected angular speed.Perhaps, judge the moving direction of camera body 2, detect panning direction thus according to motion-vector testing circuit 19 detected motion-vectors.(step b13: not), return step b11, once more the travel direction determination processing under the situation that camera body 2 does not have to move and do not detect panning direction.

Figure 10~Figure 13 is the figure that the example of panning direction guiding OSD is shown.CPU 21 carries out switching each Figure 10 of demonstration~panning direction shown in Figure 13 at interval with the stipulated time (for example 0.4 second) on the live view image and guides the control of OSD 101~104, accepts the indication of any panning direction up and down.Particularly, in Figure 10,, supervise the pan operation of direction left by being presented at the panning direction guiding OSD 101 on the live view image.If the user is according to the demonstration of this panning direction guiding OSD 101, the rotation camera main body 2 in the horizontal direction towards the left side, then panning direction be detected as left to.Equally, in Figure 11,, supervise pan operation to right by being presented at the panning direction guiding OSD 102 on the live view image.When the user towards the right side in the horizontal direction during rotation camera main body 2, panning direction is detected as right.In Figure 12, by being presented at the panning direction guiding OSD 103 on the live view image, supervise upward to the pan operation.When the user towards upside in vertical direction during rotation camera main body 2, panning direction is detected as direction.In Figure 13,, supervise the pan operation of downward direction by being presented at the panning direction guiding OSD 104 on the live view image.When the user towards downside in vertical direction during rotation camera main body 2, panning direction is detected as down direction.

Detecting (step b13: be) under the situation of panning direction, then, CPU 21 carries out showing according to the pointer that moves of live view image on the live view image and representing to comprise near the control (step b15) of target in the regulation zone of moving target position interior moving target position of this pointer.At this moment, CPU 21 sets the display position of pointer and target according to detected panning direction in step b11.

Then, CPU 21 carries out the processing of camera movement speed calculation.That is, CPU 21 calculates the translational speed (step b17) of camera body 2 according to motion-vector testing circuit 19 detected motion-vectors.

Then, CPU 21 judges as the speed detection unit whether the translational speed of the camera body 2 of the every frame that is calculated surpasses the permission translational speed of setting in the step c3 of Fig. 9.If do not surpass (step b19: not), then transfer to step b23.Under situation about surpassing (step b19: be), CPU 21 warns as informing portion and show to handle, and shows the message of the meaning that the translational speed of expression camera body 2 is too fast on display part 24, reports warning (step b21).Thus, can supervise user's note slowing down pan operation of camera body 2.In addition, be not limited to display message, for example also can report warning by the display format of change pointer and target.About the change of display format, describe that the change of color or flicker show etc., as long as can identification open when common.Perhaps, also can export the warning tones of regulation from the not shown audio output units such as loud speaker that digital camera 1 is had.

In step b23, CPU 21 with the translational speed of the camera body 2 that calculated as with the mobile relevant amount of live view image, according to the translational speed of this camera body 2, calculate the display position of pointer, update displayed.Then, CPU 21 judges that the display position of pointers is whether in the frame of target.(step b25: not), return step b17 under the situation in the frame or not target.On the other hand, under the situation in the frame of target (step b25: be), the beginning of CPU 21 control photograph processing, the shot object image of taking camera coverage at this moment is as parts of images (step b27).Like this, in the photography of the 2nd and later parts of images, CPU 21 accepts the pan operation of camera body 2, when pointer PM moves in the frame of target TM, begins photograph processing automatically, as instruction unit performance function.Then, when this photograph processing, CPU 21, carries out pixel addition to image pickup part 10 and drives according to the setting of the pixel addition of setting in the step c5 of Fig. 9 as control part.And then, be shutter speed ss, f-number and ISO photosensitivity according to the conditions of exposure of in step c7~c11 of Fig. 9, setting, carry out the exposure control of image pickup part 10.These parts of images data are stored among the SDRAM 15 temporarily.

Figure 14-the 1st illustrates the figure of an example of the display frame after the photograph processing of the 1st parts of images.Display frame example when Figure 14-the 2nd, pointer PM are positioned at the frame of target TM.Display frame when here, Figure 14-1 and Figure 14-2 illustrates and according to panning direction shown in Figure 11 guiding OSD 102 panning direction be designated as the right side.On the live view image, about display pointer PM and target TM, towards Figure 14-1 at right side configuration pointer PM, at left side configuration target TM.CPU 21 bases are so that next camera positions that the mode that the camera coverage of adjacent panning direction (right side) repeats with the regulation repetition rate is determined dispose pointer PM and target TM.Pei Zhi pointer PM follows moving of camera body 2 and moves like this.For example, when from the state of Figure 14-1 when right contrast camera main-body 2 carries out the pan operation, pointer PM moves to the left side of configuration target TM with the live view image.Then, shown in Figure 14-2, when pointer PM is positioned at the frame of target TM, carry out photograph processing automatically, take the 2nd parts of images.

In addition, panning direction being designated as under the situation on a left side according to panning direction guiding OSD 101 shown in Figure 10, as initial position pointer PM is configured in the left side, TM is configured in the right side with target.And, according to panning direction shown in Figure 12 guiding OSD 103 panning direction guiding OSD 104 shown in Figure 13 is designated as panning direction or under situation under, dispose pointer PM and target TM up and down.If panning direction is last, then pointer PM is configured in downside as initial position, TM is configured in upside with target.And if upward to camera body 2 being carried out the pan operation, then pointer PM is with the last side shifting of live view image to configuration target TM.If panning direction is down, then pointer PM is configured in upside as initial position, TM is configured in downside with target.

Then, as shown in Figure 8, CPU 21 judges the photography of the regulation number that whether is through with.For example, in the present embodiment, take 3 parts of images and generate panoramic picture, so, judge and whether taken 3 parts of images.In addition, the generation number of parts of images is not limited to 3.And, also can constitute the user and can suitably set this generation number.Then, (step b29: not), return step b15 under the situation that does not have to finish in the photography of stipulating number.Under the situation of the photography of having carried out the regulation number (step b29: be), image processing circuit 18 is used to generate the processing (step b31) of panoramic picture.Here, image processing circuit 18 is as the synthetic portion of image, after the parts of images to the regulation number that generated carries out conversion process, connects according to panning direction and to synthesize.Then, CPU 21 carries out showing the control (step b33) of the panoramic picture that is generated, end process on display part 24.And, at this moment, but the panoramic picture that is generated is recorded in the removable memories 27.

As described above, according to present embodiment, the sequence photography processing generates a plurality of parts of images, synthetic each several part image generates in the panorama photographic mode of panoramic picture carrying out automatically, can and allow translational speed to carry out the setting of pixel addition according to subject brightness, and set conditions of exposure.And, when photograph processing, can carry out pixel addition to image pickup part 10 according to the setting of pixel addition and drive, and, carry out the exposure control of image pickup part 10 according to the setting of conditions of exposure.Its result can improve the camera photosensitive degree.Therefore, can in wide brightness range, be difficult to be subjected to the image blurring few photography that influences of trembling in one's hands.And, in the brightness range of carrying out pixel addition, not only can improve the camera photosensitive degree and suppress image blurring, can also cut down the data volume of image pickup signal.

Preferred implementation of the present invention more than has been described, still, has the invention is not restricted to above-mentioned situation, in the scope that does not break away from inventive concept, can suitably change.

Figure 15 is the figure of Principles of Regulation of the ISO photosensitivity of explanation variation, if transverse axis is the subject brightness of the lightness of expression shot object image, the longitudinal axis is the ISO photosensitivity, and the inclined shaft shown in the double dot dash line is shutter speed ss, and the P line chart of the exposure control of digital camera 1 is shown.And Figure 16 is the figure that the correspondence that is set in each interior photography conditions that comprises above-mentioned pixel addition and conditions of exposure is carried out formization and illustrated.To the label of each record mark " H "~" O ", illustrate and P line chart shown in Figure 15 between corresponding relation.

In this variation, switch the pixel addition number with 2 stages, thus, further improve the ISO photosensitivity.That is, as shown in figure 15,, all driving imaging apparatus 11 under the pixel output mode, and establishing aperture is that 2 apertures are set f-number in the high brightness side of subject brightness more than or equal to B11.And, 1/125 second to be the limit shutter speed ss that slows down gradually.Thus, the ISO photosensitivity is maintained under whole pixel output modes minimum photosensitivity (100) (H).On the other hand, subject brightness more than or equal to B12 and situation less than B11 under, the drive pattern of imaging apparatus 11 is switched to the pixel addition output mode, the value that makes the ISO photosensitivity is to ISO side shifting setting.At this moment, for example establish the pixel addition number for " 4 ", imaging apparatus 11 is carried out 4 pixel addition drive, it is 400 that the ISO photosensitivity is brought up to 4 times of minimum photosensitivity whole pixel output modes under.And, in subject brightness is the scope of B12~B11,, the ISO photosensitivity is maintained 400 (I) 1/125 second to be the limit shutter speed ss that slows down gradually.And, under the situation of subject brightness, switch the pixel addition number less than B12, the value that makes the ISO photosensitivity is further to ISO side shifting setting.For example, the pixel addition number is switched to " 9 ", imaging apparatus 11 is carried out 9 pixel addition drive, it is 900 that the ISO photosensitivity is brought up to 9 times of minimum photosensitivity whole pixel output modes under.And, according to the main points identical with situation shown in Figure 5, via the stage of " J "~" N ", gradually the ISO photosensitivity is brought up to 3600 of maximum, in the scope of subject brightness less than B17,1/15 second to be the limit shutter speed ss that slows down gradually, thus the ISO photosensitivity is maintained 3600 (O).In addition, the stage of switching the pixel addition number is not limited to 2 stages, and, also can suitably set the pixel addition number that will switch.According to this variation, can bring into play the effect same with above-mentioned execution mode, and, can switch the pixel addition number in multistage ground.Thus, can be difficult to be subjected to the image blurring few photography that influences of trembling in one's hands.

And, can consider that also the generation number of parts of images is set the pixel addition number.Under this situation, for example as the setting menu of panorama photographic mode, CPU 21 shows the menu item of the indication of the generation number that is used for the receiving portion partial image on display part 24, to point out.And then, generate the setting of number according to operation signal, as number configuration part performance function from operating portion 26.And CPU 21 sets the pixel addition number according to this generation number.At this moment, CPU 21 also can set the pixel addition number as follows: generate pixel addition number under the few situation of number less than the pixel addition number that generates under the many situations of number.For example, the pixel addition number that in the above-described embodiment, the generation number of establishing parts of images is 3, establish when carrying out pixel addition is illustrated for " 4 ", and is still relative therewith, is that the pixel addition number is set at " 9 " under 5 the situation generating number.And then, at this moment, also can set this pixel addition number according to the picture size of the each several part image of obtaining according to the generation number of the picture size of panoramic picture and parts of images.Thus, can regulate the pixel addition number according to the generation number of parts of images and the picture size of panoramic picture.Thus, because hand is trembled caused image blurring, exist at memory under the situation of restriction, also can generate the each several part image with the picture size that can on memory, once launch except suppressing.Like this, the number of the parts of images that can under panorama photographic mode, synthesize can be increased, the panoramic picture of having taken wide region can be generated.

And, in the above-described embodiment, the live view image that is taken into when transferring to panorama photographic mode calculates subject brightness, according to this subject brightness with allow translational speed to set to comprise each photography conditions in being set in of pixel addition and conditions of exposure.And, illustrated that the photography conditions that will set is applied to the situation of the photograph processing of each several part image here, still, also can when each photograph processing, set each photography conditions.

Claims (7)

1. camera head, this camera head has image pickup part, described image pickup part has shot object image is subjected to light and carries out a plurality of pixels of opto-electronic conversion, described camera head carries out photograph processing continuously and generates a plurality of photographic image datas while changing relative position with subject, it is characterized in that this camera head has:
Photometric measurer, photometry is carried out in its lightness to described shot object image;
The pixel addition configuration part, its basis is carried out the setting of pixel addition number by the lightness of the described shot object image of described photometric measurer photometry and the relative permission translational speed of described subject;
Exposure condition setting portion, its according to the permission translational speed of the apparatus main body of setting explicitly by the set condition of the lightness of the described shot object image of described photometric measurer photometry and device, the conditions of exposure when setting any one value at least in shutter speed, f-number and the camera photosensitive degree as described photograph processing;
Display part, it shows that continuously the described shot object image of being taken by described image pickup part is as the live view image;
Mobile test section, it detects the moving at least one direction of described live view image;
Instruction unit, its according to move relevant amount by described mobile test section is detected, indicate respectively beginning regularly of a plurality of described photograph processing;
Control part, when its any in a plurality of described photograph processing that the indication by described instruction unit begins is photographed, the setting of the pixel addition number that carries out according to described pixel addition configuration part, described image pickup part is carried out pixel addition to be driven, and, according to the conditions of exposure of setting by described exposure condition setting portion, carry out the exposure control of described image pickup part; And
Storage part, described a plurality of photographic image datas that its storage generates by described photograph processing.
2. camera head according to claim 1 is characterized in that,
Described camera head also has the photosensitivity adjusting portion, this photosensitivity adjusting portion is under the situation of lightness less than predefined defined threshold by the described shot object image of described photometric measurer photometry, switch the setting of pixel addition number by described pixel addition configuration part, the value of the camera photosensitive degree when making described photograph processing is to ISO side shifting setting, and, lightness according to described shot object image, set shutter speed, the conditions of exposure of any one value at least in f-number and the camera photosensitive degree during as described photograph processing, change the value of described camera photosensitive degree gradually, carry out the adjusting of described camera photosensitive degree thus.
3. camera head according to claim 1 is characterized in that,
Described pixel addition configuration part is according to the photometry result of described photometric measurer, and stage ground switches sets described pixel addition number.
4. camera head according to claim 1 is characterized in that,
Described camera head has the number configuration part, and the generation number of described photographic image data is set in this number configuration part,
Described pixel addition configuration part is considered to set described pixel addition number by the generation number of described number configuration part setting.
5. camera head according to claim 4 is characterized in that,
Described pixel addition configuration part is according to the generation number of being set by described number configuration part, and the pixel addition number under the situation that this generation number is few is set for less than the pixel addition number under this generation number situation how.
6. camera head according to claim 4 is characterized in that,
Described camera head has:
Image synthesizes portion, and its described a plurality of photographic image datas with described generation are synthetic, and generate composograph; And
The picture size configuration part, it sets described a plurality of photographic image data picture size separately according to the picture size of predetermined described composograph,
Described pixel addition number is set according to the picture size of the described photographic image data of being set by described picture size configuration part in described pixel addition configuration part.
7. camera head according to claim 1 is characterized in that,
Described camera head has:
The speed detection unit, its according to move relevant amount by described mobile test section is detected, judge whether the relative moving speed of described subject surpasses described permission translational speed; And
Informing portion, it reports warning being judged to be by described speed detection unit above under the situation of described permission translational speed.
CN2009101268882A 2008-03-24 2009-03-24 Pick-up device CN101547315B (en)

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